Abstract:
BACKGROUND:Histone acetyltransferase p300 is a crucial transcriptional coactivator and has been implicated as a poor prognostic factor in human cancers. However, little is known about the substantial functions and mechanisms of p300 in NSCLC proliferation and distant metastasis. METHODS:We constructed p300 down-regulated and up-regulated cell lines through RNAi and recombinant plasmid transfection. Cell Counting Kit-8 assays were used to test the cell proliferation and confirmed by colony formation assays. Wound healing assays and transwell chamber assays were used to test the migration and invasion ability. Based upon these results, we measured the epithelial markers and mesenchymal markers after regulating p300 expression to explore epithelial-mesenchymal transition as a potential mechanism of p300 promoting NSCLC metastasis. RESULTS:In NSCLC cells NCI-H1975 and NCI-H1993, down-regulation of p300 leads to inhibition of cell proliferation and colony formation. Cells with reduced p300 expression also demonstrate inhibited migration and invasion ability. Contrarily, up-regulation of p300 significantly enhanced the proliferation, colony formation, migration and invasion ability of NCI-H460. Importantly, further investigation shows that decreased p300 expression is associated with reduced expression of mesenchymal markers and increased expression of epithelial markers, while up-regulated p300 expression correlated with decreased expression of epithelial markers and increased expression of mesenchymal markers. CONCLUSIONS:As a crucial tumor promoter, p300 promotes cell proliferation, migration, and invasion in NSCLC cells. Epithelial-mesenchymal transition is a potential mechanism of p300 promoting NSCLC metastasis.
journal_name
BMC Cancerjournal_title
BMC cancerauthors
Hou X,Gong R,Zhan J,Zhou T,Ma Y,Zhao Y,Zhang Y,Chen G,Zhang Z,Ma S,Chen X,Gao F,Hong S,Luo F,Fang W,Yang Y,Huang Y,Chen L,Yang H,Zhang Ldoi
10.1186/s12885-018-4559-3subject
Has Abstractpub_date
2018-06-07 00:00:00pages
641issue
1issn
1471-2407pii
10.1186/s12885-018-4559-3journal_volume
18pub_type
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